<?php
require 'vendor/autoload.php';

use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;

class EditorServer implements MessageComponentInterface {
    protected $clients;
    protected $content = '';
    protected $username = 'Guest';
    protected $filePermissions = []; // 文件权限和连接的数据结构
    protected $pdo; // 数据库连接

    public function __construct() {
        $this->clients = new \SplObjectStorage;

        // 连接数据库
        $this->pdo = new PDO('mysql:host=localhost;dbname=your_database', 'your_username', 'your_password');
        $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "新连接！({$conn->resourceId})\n";

        // 获取用户的权限信息并将连接添加到文件权限中
        $this->updateFilePermissions();
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        $data = json_decode($msg, true);

        if (isset($data['username'])) {
            $this->username = $data['username'];

            // 更新用户的文件权限信息
            $this->updateFilePermissions();
        }

        if (isset($data['content']) && isset($data['file'])) {
            $file = $data['file'];
            $content = $data['content'];

            // ...（文件内容修改逻辑）

            // 插入操作记录到数据库
            $this->insertOperationRecord($data);
        }
    }
    public function onClose(ConnectionInterface $conn) {
        // 连接关闭时的处理逻辑
        $this->clients->detach($conn);
        echo "Connection {$conn->resourceId} has been closed\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        // 发生错误时的处理逻辑
        echo "An error occurred: {$e->getMessage()}\n";
        $conn->close();
    }

    protected function updateFilePermissions() {
        // 查询用户的权限信息，例如从数据库中获取用户有权限修改的文件列表
        $query = "SELECT file FROM user_permissions WHERE username = :username";
        $stmt = $this->pdo->prepare($query);
        $stmt->bindParam(':username', $this->username);
        $stmt->execute();
        $files = $stmt->fetchAll(PDO::FETCH_COLUMN);

        // 更新文件权限信息
        foreach ($files as $file) {
            if (!isset($this->filePermissions[$file])) {
                $this->filePermissions[$file] = [];
            }
            if (!in_array($this->username, $this->filePermissions[$file])) {
                $this->filePermissions[$file][] = $this->username;
            }
        }
    }

    protected function insertOperationRecord($data) {
        $query = "INSERT INTO operation_records (username, file, content) VALUES (:username, :file, :content)";
        $stmt = $this->pdo->prepare($query);
        $stmt->bindParam(':username', $data['username']);
        $stmt->bindParam(':file', $data['file']);
        $stmt->bindParam(':content', $data['content']);
        $stmt->execute();
    }

    // ...（其他代码）
}

$server = IoServer::factory(
    new HttpServer(
        new WsServer(
            new EditorServer()
        )
    ),
    8080
);

$server->run();
